hello, i am new in using app42 api, and i have integrated it with my web app and i have ran into a few problems
1. how do i sum a column in the inner array of a collection
foreach( $jsonDocList as $key=>$jsonDoc )
{
$products = json_decode($jsonDoc->getJsonDoc());
$jsonDocList[$key] = $products;
}
2. how do i get the hour part of the created at timestamp